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// binary logarithm of the map size, try to avoid using this one

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static inline uint MapLogX(void)  { extern uint _map_log_x; return _map_log_x; }

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static inline uint MapLogY(void)  { extern uint _map_log_y; return _map_log_y; }

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/* The size of the map */

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static inline uint MapSizeX(void) { return 1 << MapLogX(); }

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static inline uint MapSizeY(void) { return 1 << MapLogY(); }

    27

/* The maximum coordinates */

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static inline uint MapMaxX(void) { return MapSizeX() - 1; }

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static inline uint MapMaxY(void) { return MapSizeY() - 1; }

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/* The number of tiles in the map */

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static inline uint MapSize(void) { return MapSizeX() * MapSizeY(); }

    32